[time-nuts] Cutler NAA on 24.0kHz....
David I. Emery
die at dieconsulting.com
Fri Aug 15 18:16:07 EDT 2014
On Fri, Aug 15, 2014 at 04:56:01PM -0400, paul swed wrote:
> Yes I can see on page 2 of the pdf thats the trick. Its a non costas loop
> "The action of the MSK card doubles the phase shift".....
> So it is the classic double the frequency stateless carrier recovery. that
> may drop phase due to noise.
Needless to say one can track the recovered carrier with a very
narrow loop which will not slip in phase easily during a fade.
I believe you found that simply using it to clock a flip flop
wasn't reliable... but a narrow carrier tracking loop tracking it would
Dave Emery N1PRE/AE, die at dieconsulting.com DIE Consulting, Weston, Mass 02493
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